首页|Cubic hollow porous carbon with defective-edge Fe-N4 single-atom sites for high-performance Zn-air batteries

Cubic hollow porous carbon with defective-edge Fe-N4 single-atom sites for high-performance Zn-air batteries

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Regulating the local coordination of Fe active center can further improve the oxygen reduction reaction(ORR)performance of Fe-N-C catalyst to meet the practical application requirements of zinc-air batteries(ZABs).Herein,carbon vacancies modified hollow porous catalysts(C-FeZ8@PDA-950)are constructed by microenvironment modulation,achieving the efficient utilization of active sites and optimization of elec-tronic structure.Density functional theory(DFT)calculations confirm that the defective-edge Fe-N4 sites can weaken the adsorption free energy of OH*,and hinder the dissolution of Fe center,significantly accel-erating the ORR process for ZABs.The rechargeable liquid ZABs equipped with C-FeZ8@PDA-950 display high specific capacity(819.95 mAh gZn-1)and excellent long-cycling life(over 500 h).Furthermore,the relevant flexible all-solid-state ZABs also display outstanding folding performance under various bending angles.This work will provide insights into optimizing the electronic structure to improve electrocatalytic performance in the energy conversion and storage area.

Hollow porous catalystORRDefective-edge Fe-N4 sitesZn-air batteryDFT calculations

Shilong Zhou、Chao Chen、Jiawei Xia、Le Li、Xingyue Qian、Fengxiang Yin、Guohong Dai、Guangyu He、Qun Chen、Haiqun Chen

展开 >

Key Laboratory of Advanced Catalytic Materials and Technology,Advanced Catalysis and Green Manufacturing Collaborative Innovation Center,Changzhou University,Changzhou 213164,China

Department of Chemistry and Chemical Engineering,Jiangsu University of Technology,Changzhou 213001,China

国家自然科学基金国家自然科学基金国家自然科学基金International Scientific and Technological Cooperation Program of ChangzhouPostgraduate Research & Practice Innovation Program of Jiangsu Province

220780282197802622209016CZ20220028KYCX23_3025

2024

10.1016/j.jmst.2023.09.025

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.181(14)
  • 60